15.Serial port 2 connector (10-1 pin COM2)

This connector accommodates a second serial port using an optional serial port bracket. Connect the bracket cable to this connector then install the bracket into a slot opening at the back of the system chassis.

COM2

PIN 1

P4B533-VM

P4B533-VM Serial COM2 Bracket

16.System panel connector (20-pin ASUS_PANEL1)

This connector is for various system front panel features. See the description of each feature below.

 

Keyboard Lock

Speaker

 

Power LED

Connector

 

 

Ground Ground Speaker

 

+5 V

PLED Keylock Ground

+5V

 

+5 V

MLED ExtSMI# Ground PWR Ground

Reset Ground

 

MessageLED

 

Reset SW

P4B533-VM

 

 

 

SMI Lead

 

ATX Power

 

 

Switch*

P4B533-VM System Panel Connectors

* Requires an ATX power supply.

•System Power LED Lead (3-1 pin PLED)

This 3-1 pin connector connects to the system power LED. The LED lights up when you turn on the system power, and blinks when the system is in sleep mode.

•System Warning Speaker Lead (4-pin SPEAKER)

This 4-pin connector connects to the case-mounted speaker and allows you to hear system beeps and warnings.

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Chapter 2: Hardware information